diff options
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 740fb4ea9669..cc232c016ef9 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1275,6 +1275,22 @@ bool pci_check_pme_status(struct pci_dev *dev) return ret; } +/* + * Time to wait before the system can be put into a sleep state after reporting + * a wakeup event signaled by a PCI device. + */ +#define PCI_WAKEUP_COOLDOWN 100 + +/** + * pci_wakeup_event - Report a wakeup event related to a given PCI device. + * @dev: Device to report the wakeup event for. + */ +void pci_wakeup_event(struct pci_dev *dev) +{ + if (device_may_wakeup(&dev->dev)) + pm_wakeup_event(&dev->dev, PCI_WAKEUP_COOLDOWN); +} + /** * pci_pme_wakeup - Wake up a PCI device if its PME Status bit is set. * @dev: Device to handle. @@ -1285,8 +1301,10 @@ bool pci_check_pme_status(struct pci_dev *dev) */ static int pci_pme_wakeup(struct pci_dev *dev, void *ign) { - if (pci_check_pme_status(dev)) + if (pci_check_pme_status(dev)) { pm_request_resume(&dev->dev); + pci_wakeup_event(dev); + } return 0; } @@ -2294,21 +2312,17 @@ void pci_msi_off(struct pci_dev *dev) } EXPORT_SYMBOL_GPL(pci_msi_off); -#ifndef HAVE_ARCH_PCI_SET_DMA_MAX_SEGMENT_SIZE int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size) { return dma_set_max_seg_size(&dev->dev, size); } EXPORT_SYMBOL(pci_set_dma_max_seg_size); -#endif -#ifndef HAVE_ARCH_PCI_SET_DMA_SEGMENT_BOUNDARY int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask) { return dma_set_seg_boundary(&dev->dev, mask); } EXPORT_SYMBOL(pci_set_dma_seg_boundary); -#endif static int pcie_flr(struct pci_dev *dev, int probe) { @@ -2675,7 +2689,7 @@ int pcie_get_readrq(struct pci_dev *dev) ret = pci_read_config_word(dev, cap + PCI_EXP_DEVCTL, &ctl); if (!ret) - ret = 128 << ((ctl & PCI_EXP_DEVCTL_READRQ) >> 12); + ret = 128 << ((ctl & PCI_EXP_DEVCTL_READRQ) >> 12); return ret; } |